| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Package local contains a local file implementation of the Beam file system. |
| package local |
| |
| import ( |
| "context" |
| "io" |
| "os" |
| "path/filepath" |
| |
| "github.com/apache/beam/sdks/v2/go/pkg/beam/io/filesystem" |
| ) |
| |
| func init() { |
| filesystem.Register("default", New) |
| } |
| |
| type fs struct{} |
| |
| // New creates a new local filesystem. |
| func New(_ context.Context) filesystem.Interface { |
| return &fs{} |
| } |
| |
| func (f *fs) Close() error { |
| return nil |
| } |
| |
| func (f *fs) List(_ context.Context, glob string) ([]string, error) { |
| return filepath.Glob(glob) |
| } |
| |
| func (f *fs) OpenRead(_ context.Context, filename string) (io.ReadCloser, error) { |
| return os.Open(filename) |
| } |
| |
| func (f *fs) OpenWrite(_ context.Context, filename string) (io.WriteCloser, error) { |
| if err := os.MkdirAll(filepath.Dir(filename), 0755); err != nil { |
| return nil, err |
| } |
| return os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644) |
| } |
| |
| func (f *fs) Size(_ context.Context, filename string) (int64, error) { |
| file, err := os.Open(filename) |
| if err != nil { |
| return -1, err |
| } |
| info, err := file.Stat() |
| if err != nil { |
| return -1, err |
| } |
| return info.Size(), nil |
| } |